Improvement in machines for boring posts



iltited ,rmer

talent @wie Letters Patent No. 111,532, dated February 7, 1871.

IMPROVEMENT IN MACHINES FOIR BORING POSTS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern.-

Be it known4 that I, JESSE R. GROUP, of Idaville, Adams county, in the State of' Pennsylvania, have invented certain new and useful Improvements in Machines for Boring Posts and other articles; and I hereby declare'the following to be a full and exact description thereof, ,reference being had to the accompanying drawing, forming part of this specification.

The nature or essence of my invention consists in the particular construction and arrangement of devices forming the improvements in machines for boring holes'in posts and other articles described in thev following specification and represented in the accompanying drawing.

In the accompanying drawing-- Figure 1v is an elevation of the chine.

Figure 2 is a plan ortop view.

Figure 3 is an elevation of o ne end.

In the above-mentioned drawing- A A are four posts, supporting the rails B B, which are connected by the bars G C, forming a strong frame, to which the other parts are fastened or connected. n

In addition to the four posts A A, there are two other posts, A A', connected to the posts A A by the bars D D, which barshave a notch cut in them next to the posts, to form seats for the stilesE E to front of the ma traverse in-7 which stiles are connected by the bar F to form a traversing carriage, F', carrying the .grooved roller G, for the post-carriage H to traverse on.

To traverse the carriages F F', I make the levers I I to vibrate on-the screws in the posts A', and connect the levers to the carriages vby the screw J, and fasten a notched plate, J', on the post A, to catch thelever and hold the carriage at such height as may be desired.

To hold the carriages F in place, and allow themV to traverse, I fasten the cleats A3 Ato the posts A and A1.

The vcarriages F' raiseand lower the carriage H to adapt its height to the post or article being bored. This carriage H is provided with a rib, H', on its under side, to run in the groove in the'roller G, and

- 'the carriage is held down by the lugs G', fastened to the posts A1.

llhe posts to be bored are laid on `-,the carriage4 Il, and held in place by the spurs K K, hook K1, and lever K2, presseddown on the post by the workman who traverses the carriage.

The posts A1 'are connected by the bar Il, to which the lever.L1 is fastened, which carries the pawl L2, which catches in the rack M, on the side of the carriage H,when the lever is drawn back to the post by the workman, and then pushed forward against the stop M', the pawl L2 catches another notch in the rack, and moves the carriage and post a proper distance/to bore another hole in the' post.

The rack M-may be graduated in such a manner as to bore the holes as desired.

Midway between the rails B B, I fasten the bar N to thebars C C, and fasten journal-boxes on each of the'thrce rb'ars for the pulley-shaft N1 and auger N2 to turn in, when a band from some moving power is applied to 1e pulley N3 to turn the shaft and auger fastened in by the screw I).

The shaft Nlhas a groove around it for the travers Y ing'plate P1, `fastened to the block I, which traverses on the guide-bar Q, fastened to the bar N and rail li for that purpose. -f

rIhe block Q' is fastened to the bar C for thc pivot of the leverflt, which traverses thc block I, and also the friction stop-bar R1, which traverses in guides on the rail B and bar N.

This bar lt is stopped b y the block R" on the rail B, when the auger hasborcd through the post, to prevent the twist of the auger from drawing the pnlley Na up'against the rail B; and when `the anger N2 `is drawn out of the post, `the back end of the bar It comes against the pulley N3, to apply friction and prevent the machine from running too fast, or injure the machine when the auger is not boring.

Having constructedand completed my improved machine, as above described, and applied a band to the pulley N3 to turn the anger, I put the upper end of the post to be bored under the hook K1, and lay it on the spurs K K, and bring the lever K2 down on the post to hold it -firmly on the carriage, H, while thc left hand vibrates thc lever It and brings the anger up and bores a hole and then draws the auger back, when the carriage H with thc post is traversed forward by thc lever Ll a proper distance for another hole, when the auger is brought up' again, and another hole bored, which operation may be repeated untill the required number of holes are bored in the post, when it maybe removed and another put in its place.

Having' described my improvements, I claim- A In a boring-machine, th'c combination of the lever It, operating the anger-stock I?, the friction-bar R, operating in its return motion as a .friction brake against the pulley Ni", substantially as and for the purpose described.

' JESSE Il. GROUP. Witnesses:

DANLEL H. lILrnKnEr, ISAAC Gironi. v 

